I visited an Amish homestead in Pennslyvania. Very traditional people, they're country folk who are kind of stuck in time bound by religious practice. Difficult to believe these groups still exist in the West, but they do.

Ok, I may not be 100% on this but its the time when the Amish reach adulthood and they are allowed for a time to leave the Amish community and go into the big wide world to experience how the other half live.

This could all be stereotypical nonsense but I always thought the Amish community were pretty much self sufficient. Make their own clothes, grow the own crops, don't use electricity. They don't have much need to go outside their community. So there is a good chance the ones you saw were on a Rumspringa. Of course this could all be wrong lol